Capillary Action Flower Experiment Worksheet

Science experiments lesson 4: Colour-changing flower: capillary action · Set 790 · 40 questions

What you do (Water climbs thin tubes): 1. Mix food colour into a glass of water. 2. An adult trims the flower stem and stands it in the coloured water. 3. Check the petals every few hours and draw what you see. 4. Wash your hands after handling food colour.

1. 1.🌼 How does coloured water reach the petals? (a) it is sprayed on (b) it rains on them (c) through the air (d) through tiny stem tubes
2. 2.🛟 Who should trim the flower stem? (a) a toddler (b) a pet (c) anyone, without looking (d) a grown-up
3. 3.💧 Dip a flower stem into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
4. 4.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a white flower (b) a glass of water (c) turmeric powder (d) food colour
5. 5.True or false: a few hours of waiting is needed for the coloured flower experiment. (a) False (b) True
6. 6.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? True or false: the amount of water is what we measure. (a) True (b) False
7. 7.🔍 Which is the odd one out? (a) a sugar cube (b) a strip of cloth (c) a flower stem (d) a steel spoon
8. 8.💧 Which of these does not let water climb? (a) a strip of cloth (b) a steel spoon (c) a piece of chalk (d) a paper towel
9. 9.🔮 Predict: a strip of paper towel dips into coloured water. What happens? (a) colour climbs up it (b) it turns to plastic (c) it sinks at once (d) nothing ever happens
10. 10.🔮 What would change if the flower stood in plain water? (a) the stem turns blue (b) the flower glows (c) no colour change (d) the petals turn red
11. 11.🧺 Do we need food colour for the coloured flower experiment? (a) needed (b) not needed
12. 12.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? What do we do with “the amount of colour”? (a) we change it (b) we measure it (c) we keep it the same
13. 13.🧺 Do we need a glass of water for the coloured flower experiment? (a) needed (b) not needed
14. 14.🔍 Which is the odd one out? (a) a plastic ruler (b) a glass marble (c) a rubber eraser (d) a sugar cube
15. 15.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? True or false: the kind of flower is kept the same. (a) False (b) True
16. 16.🧺 Do we need a balloon for the coloured flower experiment? (a) needed (b) not needed
17. 17.🔍 Which is the odd one out? (a) a plastic ruler (b) a glass marble (c) a steel spoon (d) a strip of cloth
18. 18.💧 Dip a sugar cube into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
19. 19.🧺 Which of these is needed for the coloured flower experiment? (a) yeast (b) a balloon (c) a battery cell (d) a few hours of waiting
20. 20.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? True or false: the room it stands in is kept the same. (a) False (b) True
21. 21.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? What do we do with “the kind of flower”? (a) we change it (b) we measure it (c) we keep it the same
22. 22.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? What do we do with “time for colour to show”? (a) we keep it the same (b) we measure it (c) we change it
23. 23.🧺 Which of these is not needed for the coloured flower experiment? (a) a glass of water (b) food colour (c) a few hours of waiting (d) a battery cell
24. 24.True or false: a plastic ruler lets water climb up it. (a) False (b) True
25. 25.💧 Dip a strip of cloth into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
26. 26.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) yeast (b) food colour (c) a white flower (d) a glass of water
27. 27.🧺 Do we need a battery cell for the coloured flower experiment? (a) needed (b) not needed
28. 28.🔮 Predict: a stem is split in two, one half in red water and one in blue. What do the petals do? (a) they all turn green (b) they stay white (c) they fall off at once (d) they turn two colours
29. 29.💧 Which of these lets water climb up it? (a) a glass marble (b) a rubber eraser (c) a piece of foil (d) a cotton thread
30. 30.🔍 Which is the odd one out? (a) a steel spoon (b) a paper towel (c) a glass marble (d) a piece of foil
31. 31.🧺 Which of these is needed for the coloured flower experiment? (a) a balloon (b) food colour (c) turmeric powder (d) a mirror
32. 32.True or false: a cotton thread does not let water climb. (a) False (b) True
33. 33.True or false: a piece of chalk does not let water climb. (a) False (b) True
34. 34.True or false: a mirror is not needed for the coloured flower experiment. (a) False (b) True
35. 35.True or false: a piece of chalk lets water climb up it. (a) False (b) True
36. 36.True or false: a glass of water is not needed for the coloured flower experiment. (a) True (b) False
37. 37.🧺 Do we need a magnet for the coloured flower experiment? (a) needed (b) not needed
38. 38.💧 Which of these lets water climb up it? (a) a steel spoon (b) a piece of chalk (c) a rubber eraser (d) a plastic ruler
39. 39.🧺 Which of these is not needed for the coloured flower experiment? (a) turmeric powder (b) a white flower (c) a glass of water (d) a few hours of waiting
40. 40.💧 Which of these lets water climb up it? (a) a glass marble (b) a plastic ruler (c) a piece of foil (d) a sugar cube

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